TY - JOUR
T1 - High-sensitivity CW Fabry-Pérot enhanced spectroscopy of CO2 and C2H2 using a 1064-nm Nd:YAG laser
AU - Inbar, E.
AU - Arie, A.
PY - 1999
Y1 - 1999
N2 - We have investigated the weak absorption lines of CO2 (2003 ← 0000) R(6), C2H2 (2100011 ← 0000000) R(12), and C2H2 (1200031 ← 0000000) P(6) near 1064 nm using CW cavity ring-down spectroscopy and CW cavity transmission. An effective interaction length of more than 30 km was achieved (cavity finesse ≈ 86 000) and the sensitivity was ≈ 10-8 cm-1. Higher sensitivity of 3.3 × 10-11 cm-1/√Hz was obtained by cavity-enhanced wavelength modulation spectroscopy. The absorption coefficients, pressure broadening coefficients, lineshapes, line strengths, and absolute wavelengths of those lines were determined, some of them for the first time. The measurements were carried out over a wide range of pressures from the strongly inhomogeneous to the strongly homogeneous region.
AB - We have investigated the weak absorption lines of CO2 (2003 ← 0000) R(6), C2H2 (2100011 ← 0000000) R(12), and C2H2 (1200031 ← 0000000) P(6) near 1064 nm using CW cavity ring-down spectroscopy and CW cavity transmission. An effective interaction length of more than 30 km was achieved (cavity finesse ≈ 86 000) and the sensitivity was ≈ 10-8 cm-1. Higher sensitivity of 3.3 × 10-11 cm-1/√Hz was obtained by cavity-enhanced wavelength modulation spectroscopy. The absorption coefficients, pressure broadening coefficients, lineshapes, line strengths, and absolute wavelengths of those lines were determined, some of them for the first time. The measurements were carried out over a wide range of pressures from the strongly inhomogeneous to the strongly homogeneous region.
UR - http://www.scopus.com/inward/record.url?scp=0032761907&partnerID=8YFLogxK
U2 - 10.1007/s003400050593
DO - 10.1007/s003400050593
M3 - מאמר
AN - SCOPUS:0032761907
VL - 68
SP - 99
EP - 105
JO - Applied Physics B: Lasers and Optics
JF - Applied Physics B: Lasers and Optics
SN - 0946-2171
IS - 1
ER -